Sensitivity of GM Knock Sensors

nacelp nacelp at bright.net
Sun Apr 9 20:14:15 GMT 2000


A reply to my own reply ain't this interesting.
Any wayz,
Just looking at some marine stuff (SBC), and the knock sensor is mounted
with a 45d angled fitting.  Didn't look to be anything special.
Grumpy



> Hmm, well. Ya can 0 out everything that you can, and then change
everything
> else.  Then run a file compare.  Then use promedit, and a correction of
.352
> (Double check this).  Then try looking for a string, of what maybe the
> timing adders.   Or just hac the code for the chip,  being able to read
code
> is the beest answer, but the above will for getting it done...  Course ya
> got to verify all of it.
> Grumpy
>
> >    Carl,
> >   This is a Vortech SC and I have the Carroll Gaseous intercooling
system.
> > (Water/Alcohol, 100 PSI pump). The system is MAP.
> >    Bruce,
> >    I have the TunerCat editor DA2 and the two spark adder tables are not
> > there.
> >                 Jim
> > Subject: RE: Sensitivity of GM Knock Sensors
> >       I just noticed this thread....sounds like an AE problem causing
> knock
> > which you are seeing "count down" as RPM increases.....is this a
> centrifugal
> > or what???Is this MAF or MAP???? I'd like to help if I can.....
> > To: gmecm at diy-efi.org
> > Subject: Sensitivity of GM Knock Sensors
> >     Mark,
> >    Thanks for the reply. I had already been through the timing (21
degrees
> @
> > WOT)  have tried unleaded race gas with the KS still reacting @ WOT. The
> > further up the RPM goes the less Knock but at the initial hit in 2nd
gear
> I
> > show a 7 degree KR. In high gear I get a 3-2-1 KR and then it goes away
> > about 4500 RPM. I backed the KS down as far as 80"# and it is better
will
> > probably go to 70"# and see what that looks like. I realize that at the
> > shift and the initial hit of the throtle there will be some but of
course
> > with the big hits I loose power.
> >      Mabey I forgot to mention this is a supercharged 10# boost  LT1
383.
>
>
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